{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "125999",
    "entityType": "User",
    "nonce": "0xd1e4ba1453013c7aed0715e2571794bf68d3a300292e83fbabb19f5c51b5f883",
    "signature": "0x3c6facc40aa81d08fff5f33a80cfd5ed9acb79ce9af2f1d6cd89e0c3b9bfb6243069f7f904bf0a423679a7f66e86a935f0c5defd89264fd6a98a2f8711fa8f081c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}